Autism, intellectual disability incidence linked with environmental factors -- ScienceDaily

An analysis of 100 million US medical records reveals that autism and
intellectual disability (ID) rates are correlated at the county level
with incidence of genital malformations in newborn males, an indicator
of possible congenital exposure to harmful environmental factors such as

Male fetuses are particularly sensitive to toxins such as environmental
lead, sex hormone analogs, medications and other synthetic molecules.
Parental exposure to these toxins is thought explain a large portion of
congenital reproductive malformations, such as micropenis, hypospadias
(urethra on underside of the penis), undescended testicles and others.

Non-reproductive congenital malformations and viral infections in males
were also associated with double digit increases in autism and ID rates.

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